diff --git a/avr/send.c b/avr/send.c
index b4cc182..be6442f 100644
--- a/avr/send.c
+++ b/avr/send.c
@@ -73,16 +73,16 @@ static uint8_t spi_send_byte(uint8_t value) {
 
         _delay_us(60);
 
-        PORTB |= (1 << PORTB5);
-
         if (PINB & (1 << PINB3)) {
             ret |= 1;
         }
 
+        PORTB |= (1 << PORTB5);
+
         _delay_us(60);
     }
 
-    _delay_us(210);
+    _delay_us(150);
 
     return ret;
 }
@@ -103,6 +103,8 @@ static void spi_send_packet() {
 
     response.device = spi_send_byte(0);
     response.status = spi_send_byte(0);
+
+    _delay_us(270);
 }
 
 static uint16_t checksum() {