Blackmagic ATEM Tally Switcher
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I created an arduino project for a tally light. The design plans are available here.
The software (mac only) is available at the App Store:
https://apps.apple.com/us/app/tally-light-switch/id1565790070?mt=12
You can connect to a Blackmagic ATEM switcher by IP address.
You can setup IP addresses for the tally lights. If an IP address is provided, the software will send a http request in the form of:
http://ipaddress/off
http://ipaddress/red
http://ipaddress/green
to the tally light.
It should respond with 'OK' (two bytes) only if it received the GET request correctly.
![IMG_9010.jpg IMG_9010.jpg](/img/image.jpg.php?id=180&key=b9b9359f6&breedte=240)
How to build the Tally :
DISCLAIMER: I am not a professional electronics designer, I'm only self taught and I builded this project with trial and error. I don't give any warranty on the information below.
I used a UNO+WiFi R3 , actually only the ESP8266 processor is used (the arduino is bypassed), so maybe it can be done cheaper and with a smaller chip.
![IMG_9007.jpg IMG_9007.jpg](/img/image.jpg.php?id=177&key=b8fb0d51a&breedte=240)
![IMG_9008.jpg IMG_9008.jpg](/img/image.jpg.php?id=179&key=b8fb3e130&breedte=240)
![IMG_9009.jpg IMG_9009.jpg](/img/image.jpg.php?id=178&key=b8fb3d54c&breedte=240)
Tallylight ESP8266 code:
![TallyLight_ESP8266_V2_Single_chip.ino.zip TallyLight_ESP8266_V2_Single_chip.ino.zip](./jvtexteditor/txt.png)
(At line 27 add your Wifi Access point credentials).
3d printer files:
![JVTallyBox stl files.zip JVTallyBox stl files.zip](./jvtexteditor/txt.png)
Electronic scheme (made with circuitlab.com):
![Schermafbeelding 2021-07-20 om 14.05.57.png Schermafbeelding 2021-07-20 om 14.05.57.png](/img/image.jpg.php?id=181&key=bc6a54a28&breedte=817)
Hardware list:
2 green leds
2 red leds
UNO+Wifi R3 (+ antenna)
2 resistors 30 Ohm (100 is probably to much, you could experiment with a little higher or lower, depending on how much light comes of the resistor.