Wiki VMAC PiHat Versions

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Raspberry Pi
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VMAC PiHat v1
VMAC PiHat v2

The below is a feature comparison table for the VMAC PiHat V2

FeaturePiHat v1 (Depreciated)PiHat v2.4 LitePiHat v2.4
Pi GPIO HeaderStandard 40 PinStandard 40 PinStandard 40 Pin
Pi GPIO (3V3 Logic Level)Raspberry Pi Zero, 2, 3 & CompatiblesRaspberry Pi Zero, 2, 3 & CompatiblesRaspberry Pi Zero, 2, 3 & Compatibles
Video Input/OutputComposite Video 75 OhmsComposite Video 75 OhmsComposite Video 75 Ohms
Audio Input/OutputLine Level Audio 600 OhmsLine Level Audio 600 OhmsLine Level Audio 600 Ohms
Matrix Audio Video (I2C)1 x FMS6501A (12 In / 9 Out)1 x FMS6501A (12 In / 9 Out)1 x FMS6501A (12 In / 9 Out)
RCA A/V Inputs666
RCA A/V Input Defaults3 Video 3 Audio3 Video 3 Audio3 Video 3 Audio
RCA A/V Outputs444
RCA A/V Output Defaults2 Video 2 Audio2 Video 2 Audio2 Video 2 Audio
3.5mm 4 Pole Input1 Video 2 Audio1 Video 2 Audio1 Video 2 Audio
On-Screen Display (SPI)1 x MAX7456 OSD, on Matrix Bus
DTMF Decoder (GPIO)1 x 8870 Receiver1 x 8870 Receiver
Video Detect Squelch (GPIO)3 x MAX7461 Detectors on Inputs 1-33 x MAX7461 Detectors on Inputs 1-3
Squelch Logic Inputs (GPIO)4 x Matrix Control on I/O 1 @ 3v3 level.4 x Matrix Control on I/O 1 @ 3v3 level.4 x Matrix Control on I/O 1 @ 3v3 level.
PTT Output (GPIO)1 x FET Switched on I/O 11 x FET Switched on I/O 11 x FET Switched on I/O 1
User Push Button (GPIO)1 x PCB Tactile1 x PCB Tactile1 x PCB Tactile
Supply 5VOnboard 5V regulator5V taken from Pi Header5V taken from Pi Header
Supply 3V33V3 Taken from Pi HeaderOnboard 3V3 RegulatorOnboard 3V3 Regulator
StackableYes, with a PiHat v2.4 LiteYes, with a PiHat v2.4 Lite or PiHat v2.4 Yes, with a PiHat v2.4 Lite
LED Indicators (GPIO)3. Pwr PTT Status4. Pwr PTT Status User4. Pwr PTT Status User
Pi Zero Video ConnectionYesYesYes
UART (3V3 Level)TXD, RXD, RTS tpo I/O 2TXD, RXD, RTS tpo I/O 2TXD, RXD, RTS tpo I/O 2
Test Points / Expansion Points11111
PCB Type2 Layer FR42 Layer FR42 Layer FR4
Mounting Holes555
Size85mm x 56mm85mm x 56mm85mm x 56mm
PriceNo Longer Available£59.00£69.00

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