Oleg Oleg
RUSSIAN FEDERATION, THE • + Follow
Edit Project
Description
NRF52832 Touch Switch Power Supply
This is the power supply board (including relays) for the touch switch plates that I made for Livolo.
The project complements the previous touch switch plates that I made a long time ago providing a full solution for creating a custom in wall RF switch which works with no neutral line.
NRF52832 Touch Switch 1ch
NRF52832 Touch Switch 2ch
The project is based on the DER-622 design from Power Integrations which is free to download and study in order to understand how it works (schematic is available also). There's also another one called DER-832 which is more recent and a little bit improved.
Although there is a possibility to use loads that draw several amps I don't advise you to do so because it wasn't quite designed for it.
Saying this because of the heat dissipation and pcb traces.
Max current that can be drawn should be limited to 1.5 - 2 amps.
The touch sensing board including radio/mcu must not draw more than 8-10mA on average.
This can be achieved theoretically via the built-in dc-dc converter of the NRF52xxx IC.
The output capacitor (C3) of the 3.3V LDO must be increased to 220uF (case B tantalum - yes, it can be soldered over the 0805 footprint) if instability is observed. Also a 0.22 - 0.47uF AC rated capacitor (275Vac) must be placed in parallel on one of the light bulbs (can be avoided only if the front board draws 1-2mA max - this can be achieved only if used with a Bluetooth LE project - I'm sorry but these are the laws of physics).
Jun 12,2020
2,047 views
end-flag
NRF52832 Touch Switch Power Supply
This is the power supply board (including relays) for the touch switch plates that I made for Livolo.
2047
4
0
7.75 (3)
Published: Jun 12,2020
BOM(Bill of materials)
Purchase
Donation Received ($)
Under the
Attribution-ShareAlike (CC BY-SA)
License.
- Comments(0)
- Likes(4)

Upload photo
0 / 10000
It looks like you have not written anything. Please add a comment and try again.
You can upload up to 5 images!
Image size should not exceed 2MB!
File format not supported!
-
Engineer Feb 11,2022
-
Engineer Sep 19,2021
-
Enrico Ziehe Dec 04,2020
-
Engineer Jul 27,2020
View More
VOTING
3 votes
- 3 USER VOTES
7.75
- YOUR VOTE 0.00 0.00
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Design
1/4
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Usability
2/4
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Creativity
3/4
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Content
4/4

-
2design
-
8usability
-
10creativity
-
10content
7.50

-
1design
-
2usability
-
10creativity
-
10content
5.75

-
10design
-
10usability
-
10creativity
-
10content
10.00
More by Oleg Oleg
-
Small passive DC constant current electronic load IntroductionA small passive DC adjustable constant current (CC) electronic load with temperature-con...
-
Small jlinkV9 downloader V1.0 Adopt typec interface, stm32f205 master control, lead SWD, SWO, support virtual serial port, resista...
-
IP2325 dual string lithium battery charging module Miniature charger for dual lithium batteries.Since the IP2325 does not have a charge balancing funct...
-
Electronic switch The operating voltage is within 30V. Depends on the PMOS voltage.
-
Power supply module NAE20S08 Is based on SY8288A / JW5068A series power supply ic Volume: 10x10x6mm Input range: 4-23vin Output: ...
-
Solder paste dispenser A portable miniature intelligent electric SMT solder paste dispensing pen supports quantitative extr...
-
Development Board STM32F103RET6 Development Board Series STM32F103RET6Resources on the board3.3/5.0/12V power input/output pinReset ...
-
DAPLINK and STM32 minimum system combination DAPLINK and STM32 minimum system combination, one data cable can complete the download and debugging...
-
USB to RS232 This is a program verification board. The main verification content is the function of USB to RS232 ...
-
ESP Air Burner The ESP downloader with Air Burnner interface uses probes instead of DuPont cables.
-
Docking station USB3.1 Using GL3520 USB 3.1 HUB chip,Supports super high speed, high speed and full speed USB connection, f...
-
RX5808 open source receiver 5.8g open source receiver, can receive 5.8g signal, AV video signal output. Rx5808 dual-reception fu...
-
5.8G image transmission module It can be used for AV signal audio and video wireless transmission; baby monitor; wireless camera se...
-
GRBL-ESP32 esp32s 3d is suitable for GRBL and marlin software
-
STM32 Sensor Node A Small STM32F103C8T6 board with all functional pins exposed. Similar to the BluePill Board except:N...
-
2.8 inch TFT touch screen The module uses a 2.8-inch TFT color LCD screen. The module is compatible with punctual atomic 2.8TF...
-
LED dot matrix clock LED dot matrix electronic clock based on 51 single chip microcomputer.Based on STC15W4K series ultra...
-
STM32F411Cx 401Cx minimum system + J-LINK debugger The STM32F411 / 401 microcontroller belongs to the STM32 Dynamic Efficiency series. These devices ar...
-
Small passive DC constant current electronic load IntroductionA small passive DC adjustable constant current (CC) electronic load with temperature-con...
-
Small jlinkV9 downloader V1.0 Adopt typec interface, stm32f205 master control, lead SWD, SWO, support virtual serial port, resista...
-
IP2325 dual string lithium battery charging module Miniature charger for dual lithium batteries.Since the IP2325 does not have a charge balancing funct...
-
Electronic switch The operating voltage is within 30V. Depends on the PMOS voltage.
-
Power supply module NAE20S08 Is based on SY8288A / JW5068A series power supply ic Volume: 10x10x6mm Input range: 4-23vin Output: ...
-
Solder paste dispenser A portable miniature intelligent electric SMT solder paste dispensing pen supports quantitative extr...
-
Development Board STM32F103RET6 Development Board Series STM32F103RET6Resources on the board3.3/5.0/12V power input/output pinReset ...
-
DAPLINK and STM32 minimum system combination DAPLINK and STM32 minimum system combination, one data cable can complete the download and debugging...
-
USB to RS232 This is a program verification board. The main verification content is the function of USB to RS232 ...
-
ESP Air Burner The ESP downloader with Air Burnner interface uses probes instead of DuPont cables.
-
Docking station USB3.1 Using GL3520 USB 3.1 HUB chip,Supports super high speed, high speed and full speed USB connection, f...
-
RX5808 open source receiver 5.8g open source receiver, can receive 5.8g signal, AV video signal output. Rx5808 dual-reception fu...
You may also like
-
-
Instrumentation Input, high impedance with 16 bit 1MSPS ADC for SPI
274 0 0 -
RGB LED Matrix input module for the Framework Laptop 16
459 0 2 -
-
📦 StackBox: Modular MDF Storage Solution 📦
284 0 2 -
-