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SPK2221.01
Assembly kit - Six digit dcf clock
for small weaker display, with temperature display
and extended alarm function
Assembly plan for the kit
Version: Firmware 1.80-146
StefPro UG (haftungsbeschränkt) & Co. KG
Theilenmoorstr. 11
26345 Bockhorn, Germany
Phone: +49-4452-709175
Web: https://www.stefpro.biz/
E-mail: info@stefpro.biz
Assembly plan version 2.0.1 - Valid from 22.03.2021.
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Related Manuals for StefPro SPK2221.01
Summary of Contents for StefPro SPK2221.01
- Page 1 Assembly kit - Six digit dcf clock for small weaker display, with temperature display and extended alarm function Assembly plan for the kit Version: Firmware 1.80-146 StefPro UG (haftungsbeschränkt) & Co. KG Theilenmoorstr. 11 26345 Bockhorn, Germany Phone: +49-4452-709175 Web: https://www.stefpro.biz/ E-mail: info@stefpro.biz...
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Page 2: Table Of Contents
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Table of Contents Table of Contents Safety Application and function description Function description Alarm Function Technical data Basic circuit Bill of material Basic assembly Connectors X-DC : DC Power input : Print plug 2 pole... - Page 3 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 DCF active Receiving brightness Hour of synchronization Receive state display DCF input pull up DCF input invert Power save pin invert DCF sensitivity DCF exit Clock Settings Set hour Set minute Set year...
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Page 4: Safety
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Safety Follow the manual This assembly kit is only safe in operation if all instructions are read in this datasheet. The assembled kit is called in the following module. General understanding of safety By the module there are no hazard under normal use. -
Page 5: Application And Function Description
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Application and function description Application and function description Function description This IC can analyze the DCF77 signal, which is received by a receiver and demodulated. Thereceived time and date can output directly to a 7-segment displays. -
Page 6: Basic Circuit
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Basic circuit Basic circuit Figure 1: Basic circuit of SPK2221.01 part 1 Figure 2: Basic circuit of SPK2221.01 part 2 Basic circuit - Function description Page 6 of 42... -
Page 7: Bill Of Material
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Bill of material Quantity Name Value Package Scope of delivery D3,D6,D5,D7,D8,D10 1N4148 R1,R3,R4,R5,R6,R8 4k7 1/4 0207 R7,R10,R11,R12,R13,R14,R15,R16 100 1/4 0207 100k 1/4 0207 47k 1/4 0207 1k 1/4 0207 R1,R3,R4,R5,R6,R8 4k7 1/4 0207 10µH... -
Page 8: Basic Assembly
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Basic assembly Basic assembly The basics of electronics and PCB assembly can be found in the document:"Grundlagen der Elektrotechnik, Grundlagen des bestückens von Platinen".Unfortunately currently only available in German. Figure 3: Basic assembly of SPK2221.01 Assembly plan with names Figure 4: Basic assembly of SPK2221.01 1... - Page 9 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Figure 5: Basic assembly of SPK2221.01 step 1 First, solder flat components, such as resistors, diodes and coils. Attention: the coil L1 is shown wrong, this is [brown, black, black, silver]. Figure 6: Basic assembly of SPK2221.01 step 2 Now you can solder ceramic capacitors and the quartz.
- Page 10 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Figure 7: Basic assembly of SPK2221.01 step 3 Now comes the IC socket for the SPM2121P. The IC SPM2121P can also be soldered directly, but should not. Figure 8: Basic assembly of SPK2221.01 step 4 Now it's time for the transisitors and TO92 IC's, be sure to leave a little space to the PCB.
- Page 11 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Figure 9: Basic assembly of SPK2221.01 step 5 The buttons and Elko's are a bit higher and are therefore now their turn. Figure 10: Basic assembly of SPK2221.01 step 6 Finally, the LEDs and 7 segment displays (these are to be ordered separately), these are to be soldered directly onto the PCB.
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Page 12: Connectors
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Figure 11: Basic assembly of SPK2221.01 step 7 The finally assembled pcb, only the wires for the supply voltage and the DCF receiver are missing. Connectors Figure 12:Connector description for module SPP2200.0 Here, the leads are soldered directly to the pins on the circuit board. - Page 13 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 N.C. Do not connect DCF in Digital input DCF signal input DCF ps Digital Output DCF PowerSave output Power 5 volts DC, 30mA Never solder the DCF module directly onto the circuit board, even if the ELV module suggests it. Please connect this with some stranded wire to allow a certain distance to the display.
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Page 14: Properties Of The Components
The seven-segment display LD1 must have a common anode. The anode is driven by a transistor which must withstand at least 100 mA on the CE track. Via R1, the brightness of the LEDs of each display can be adjusted in limits.It should be noted that with direct control by SPK2221.01 the maximum current in SEG_A SEG_DP is 20 mA. -
Page 15: Calculate The Series Resistor For One Led
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 It is recommended to place a contrast panel in front of the display, see figure 16 and 15. Note: The menu is always displayed with 100% brightness. Calculate the series resistor for one LED UDS ≈... -
Page 16: Tested Modules
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 For DCF modules with open collector (open collector) or open drain output the input detected automatically by default whether a pull-up resistor is required. In menu a pull-up resistor can be connected or disconnected permanently. -
Page 17: Quartz - Accuracy Of The Time
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 this cannot be generalized.The switching power supplies offered in our shop have been tested and only minimally interfere with DCF reception. WARNING Use only a power supply unit with electrical isolation! Quartz - Accuracy of the time The quartz, microcontroller, quartz capacitor combination decisively determine the accuracy of the clock. - Page 18 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Combination R1 and C3 gives a mono time of approx. 2 min. Colors of thin wires: red: plus supply voltage (<= + 12 Volt) black: minus supply voltage white: Buzzer signal from the IC SPK2221.01...
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Page 19: Properties Of Light Sensor With Phototransistor
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Colors of the signals: yellow: Trigger signal light blue: MP3 Player Power Supply dark blue: Output from the MP3 Player Properties of light sensor with Phototransistor The light sensor is used to control the brightness of the display.As light sensors many phototransistors are suitable, in the example circuit a BPW42 is used.If another phototransistor is used, may you need to change the value of the pull-up resistor R1. -
Page 20: Method Of Calibration With A Temperature Value
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 R1 is optional for the detection of whether a sensor is connected or not; this is not necessary with permanent wiring. Method of calibration with a temperature value You can carry out a calibration with a temperature value yourself with a suitable temperature measuring device. -
Page 21: Installation The Dcf Clock
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Installation the DCF clock Installation the DCF clock Figure 18: Align the DCF antenna The external antenna receives the DCF77 signal and should be directed to Frankfurt, as shown in Figure 18. - Page 22 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 „SEArCH„ Search the fifty-ninth second. „rEAdXX„ read the dcf time. Installation the DCF clock - Synchronize with active display Page 22 of 42...
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Page 23: Emitted Electrical Disturbances By The Display
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Emitted electrical disturbances by the display In the near field generates the display, by the fast on and off switching of the LEDs, disturbances.These depend on the brightness of the display. For EMC / CE conformity hese disturbances are uninteresting because they are strong only in the near field and occur only under 30 MHz.For sensitive... - Page 24 StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Figure 22: Measurement with brightness level 25 Figure 22 shows on the display brightness set to full brightness level 25 and it will be something displayed. There can be seen big disturbances in the near field.
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Page 25: Button Description
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Button description Button description Overview of buttons Button functions Menu+ Opens the menu, next setting Menu- Opens the menu, previus setting Plus or + Function key, usually +, On or jump into and exit a submenu... -
Page 26: Normal
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Level 1 Level 2 ⇓ ⇓ Info section ⇓ ⇓ IC number Firmware ⇓ ⇓ version ⇓ ➟ ↻ : Next step in main menu. : Next step in sub menu. -
Page 27: Alarm
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Alarm With plus (+) you enter the sub-menu Alarm. ALARM Alarm day selection Use plus (+) and minus (-) to select the day or which group is to be edited.There are the group Week (WEE) and weekend (wnd). Saturday and Sunday are in the group weekend, all other days are in the group week. -
Page 28: Alarm Time Hour
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Alarm time hour Use plus (+) and minus (-) to set the hour for alarm.The number can be 0- Alarm hour Alarm time minute Use plus (+) and minus (-) to set the minutes for alarm.The number can be... -
Page 29: Brightness
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Brightness With plus (+) you enter the sub-menu brightness. Brightness Brightness menu Sets the brightness of the menu.The number can be 10-25 Brightness Brightness max In this menu item, the maximum brightness plus (+) und minus (-) of the display can be adjusted. -
Page 30: Brightness Factor
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Brightness factor Use plus (+) and minus (-) to set the calculation factor for auto brightness. The number can be 1-99 Brightness factor Brightness offset Brightness offset Use plus (+) and minus (-) to set the calculation offset for auto brightness. -
Page 31: Standby Brightness
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 StandBy Brightness Use plus (+) and minus (-) to adjust the brightness of the display in standby mode, 0 means off. The range is 0 to 90, but 90 corresponds to 9 of the other brightness settings in this menu. -
Page 32: Receive State Display
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Receive state display Use plus (+) and minus (-) to set the mode for the receive LED, which shows the received signal.The number can be 0-2. 0: Only until the clock has been synchronized. -
Page 33: Dcf Sensitivity
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 DCF sensitivity Use plus (+) and minus (-) to set the DCF Sensitivity. 1 has a very low tolerance and 6 has the highest tolerance for reception. The Sensitivity should be set as small as possible to avoid incorrect receiving.The... -
Page 34: Set Day
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Set day Use plus (+) and minus (-) to set the day, limit by month. The number can be 1- 28, 29, 30, 31. change day Day of week Monday - Montag... -
Page 35: Calibrate Quartz
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Calibrate quartz With plus (+) and minus (-) the quartz can be calibrated, a positive value increases the period time and a negative value reduces it.The period should also be set as precisely as possible to 1ms or 1kHz (for frequency measurement). -
Page 36: Attachment
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 Attachment Attachment Bootloader handling Start the IC/module/device in bootloader mode 1. Switch off the IC/module/device. 2. Connect the UART adapter (USB → 3.3 volts or 5 volts UART or RS232 → 3.3 volts or 5 volts UART). -
Page 37: Segment Characters
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 7 segment characters The symbolism of each character: Change log Change log Safety 20.03.2017 - 1.0.3 - ADD Add ESD note DCF module properties Attachment - Bootloader handling Page 37 of 42... -
Page 38: Power Supply Properties
StefPro - www.stefpro.biz - info@stefpro.biz - SPK2221.01 25.12.2022 21.11.2016 - 1.0.1 - ADD Add list of tested modules 20.03.2017 - 1.0.3 - ADD Update list of tested modules, add standard pin assingment Power supply properties 21.12.2019 - 1.0.5 - ADD... -
Page 39: Liability, Warranty And Copyright Notice
The manufacturer is not responsible for all personal injury and property damage caused by improper operation. Warranty StefPro warranty only for the Kit and their firmware. The warranty is exclusively limited for the replacement of the IC within the warranty period Change log - Power supply properties... -
Page 40: Copyrightnotice
Copyrightnotice The circuitry and firmware to the kit and module from StefPro are protected by copyright. Unauthorized reproduction or distribution of Modules with this program or any portion of it. This is pursued bothcriminal and civil law, and may result in severe penalties and compensation for damages. -
Page 41: Disposal Information
This modules or devices comply with the EU directive on electronic and electrical equipment (WEEE regulation)and therefore may not be disposed of with household waste. Dispose of the device over your local collection center for electronic equipment! WEEE-Reg.-Nr.: DE 58929072 ( StefPro UG (haftungsbeschränkt) & Co. KG ) DE 78089358 ( StefPro Einzellunternehmen bis zum 01.01.2015 ) Impress Impress StefPro™...
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