From c53f7bd435d685d7e6f547e2460b441b20a8006a Mon Sep 17 00:00:00 2001
From: Erwin Ried <1091420+eried@users.noreply.github.com>
Date: Thu, 14 May 2020 11:22:18 +0200
Subject: [PATCH] Created Hardware overview (markdown)

---
 Hardware-overview.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Hardware-overview.md

diff --git a/Hardware-overview.md b/Hardware-overview.md
new file mode 100644
index 0000000..853b71a
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+++ b/Hardware-overview.md
@@ -0,0 +1,24 @@
+<img src="img/hw_overview_h2_front.png" height="500"> <img src="img/hw_overview_h2_back.png" height="500">
+1. Antenna (the connector is a _female SMA_, so the antenna needs to be _male SMA_, and not _RPSMA_)
+2. Encoder thumb wheel (on the H1 has a different layout, but the same functionality), notice that pushing the wheel down has the same effect as pressing the center push button
+3. Directional pushbuttons and Enter/ON/OFF in the center
+4. CLK IN
+5. CLK OUT
+6. Micro usb port and next to it, charging led indicator (in the H2, this might flicker while charging but will _mostly_ turn off when the battery is full)
+7. Headset/Microphone (standard smartphone 4 segment 3.5mm connector)
+8. Receive and transmit leds (indicates the current operation, since the HackRF is half-duplex, only one of this will be lit at every moment)
+9. Other status leds (1.8V: rail status, RF: internal power supply, USB: connection to host is active)
+10. DFU mode button (check the [firmware update procedure](Update-firmware#dfu) for details)
+11. 3.3V rail status led
+12. Reset button
+
+<img src="img/hw_overview_h2_inside.png" height="500">
+1. MicroSD card slot (while in a case, insert the card with the contacts looking to the same direction as the screen)
+2. GPS module option (has not been implemented)
+3. Memory backup coin cell (compatible with CR1225 or CR1220 in the H2, and with the CR2032 in the H1)
+4. Speaker connector (yellow and red go to the speaker coil, black is ground and can be left disconnected)
+5. Battery connector
+6. TCXO clock (it might be populated with SMD components like in the upper image, unpopulated or populated with a shielded module)
+7. Headset/Microphone jack (In case of the H2 the internal speaker switches automatically when the headset is plugged)
+8. USB charging circuitry (only the units with battery; this is a standard power bank chipset)
+9. Audio amp circuitry
\ No newline at end of file